<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <div id="app">
        <div v-if='value=="man"' v-for='(value,key,index) in obj'>{{value+'-------'+key+'-------'+index}}</div>
    </div>
    <script src="./vue.js"></script>
    <script>
        var vm = new Vue({
            el: '#app',
            data: {
                obj: {
                    name: 'ls',
                    age: '18',
                    sex: 'man'
                }
            }
        })
    </script>
</body>

</html>